hi, my os is windows 7. There are no error messages. the music keeps playing and the computer keeps running fine. just the game is frozen. game freezes on "options", "Load Game", "help" and when you select a campaign after pressing "new game". the other button...

every time i try tp pick an option in the main menu, like selecting a campaign or options, the game freezes. no playing possible so far.
whats up with that?